Boat-Propeller (open access)

Boat-Propeller

Patent for a boat propeller that runs more efficiently by turning in such a way that the load of water on the propeller is taken off when its blades are going up.
Date: July 16, 1912
Creator: Reames, Charles H.
System: The Portal to Texas History
Semaphore. (open access)

Semaphore.

Patent for a semaphore with an enclosure for the operating gearing in signaling devices for railway trains. It incloses the operating gearing so that ice does not interfere with its operation and water does not touch the gearing.
Date: January 16, 1912
Creator: Van Zandt, Luther H.
System: The Portal to Texas History
Direction Indicator (open access)

Direction Indicator

Patent for direction indicators for vehicles
Date: January 16, 1917
Creator: Boberg, Charles E.
System: The Portal to Texas History
Means for Facilitating the Use of Railway-Schedules. (open access)

Means for Facilitating the Use of Railway-Schedules.

Patent for "improvements in means for facilitating the use of local, through and joint-route transportation or time schedules of railways or other carriers.” (lines 10-13) including instructions and illustrations.
Date: March 16, 1915
Creator: Glisson, Amos A.
System: The Portal to Texas History
Crutch. (open access)

Crutch.

Patent for crutches with adjustable pneumatic cushioned arm rests, adjustable length, absorbent hand grip, and a detachable vertical leg rest.
Date: May 16, 1916
Creator: Gregson, William
System: The Portal to Texas History
Candy-Wrapping Machine. (open access)

Candy-Wrapping Machine.

Patent for a candy and small object wrapping machine that automatically cuts, feeds, and positions paper, making use of a folding arm. Intended to significantly decrease time taken to wrap small objects by hand.
Date: July 16, 1918
Creator: Greer, John H.
System: The Portal to Texas History
Wire-Working Machine. (open access)

Wire-Working Machine.

Patent for improvements in Wire-Working Machines that forms hangers for "coats, trousers, and other clothing" (lines 11-12). Provides a more inexpensive, faster, and more accurate machine that uses less power, includes illustrations.
Date: December 16, 1919
Creator: Shelton, John F.
System: The Portal to Texas History
Splitting-Ax (open access)

Splitting-Ax

Patent for a splitting ax to be used for splitting wood, especially rails, constructed in a manner to prevent the ax wedge from sticking in the rail. The patent includes instructions and illustrations.
Date: July 16, 1918
Creator: Sandidge, Thomas R., Sr.
System: The Portal to Texas History
Gas-Purifier (open access)

Gas-Purifier

Patent for a device that separates impurities and contaminants from gas used in generators. A series of filters, and baffles are used to extract impurities to the gas supplied to a generator.
Date: September 16, 1919
Creator: Modlin, Frank E.
System: The Portal to Texas History